Amazon launched its download service back in December last year with some 3 million DRM-free MP3 files for download.
The site has now added more headline-grabbing 29p downloads to take the number of files to over 5 million.
The cut-price files are available in the MP3 format at 256 kbps, and include pop hits new and oldish.
House of Pain's 'Jump Around', MGMT's 'Kids', Snow Patrol's 'Chasing Cars' and The Killers' 'Mr Brightside' are all among the new batch of bargain downloads.
Head over to Amazon to find out what other slices of pop music can be bought for less than the price of a packet of crisps.
More after the break